AT91SAM7A1-AU Atmel, AT91SAM7A1-AU Datasheet - Page 70

• Manufacturer Part Number: AT91SAM7A1-AU
• Description: IC ARM7 MCU 32BIT ROMLESS144LQFP
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM7A1-AU

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 40MHz
• Connectivity: CAN, EBI/EMI, SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 49
• Program Memory Type: ROMless
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 144-LQFP
• For Use With: AT91SAM7A1-EK - BOARD EVAL FOR AT91SAM7A1
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

12. Special Function Mode (SFM)
12.1
12.2
12.3
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Chip Identification
Reset Status
Test Mode
AT91SAM7A1
The AT91SAM7A1 provides registers which implement the following special functions:
Chip identification is done via three registers: the Chip ID (SFM_CIDR), the Extended Chip ID
(SFM_EXID) and the manufacturer ID.
These registers give information on:
The AT91SAM7A1 includes the Reset Status (SFM_RSR) register to give the last cause of
reset (i.e., hardware reset or internal watchdog reset).
The AT91SAM7A1 provides functional test mode in order to check or test some registers in
internal peripherals.
The test mode is entered using the SFM_TM register.
It must be noted that this test mode is different from the factory test mode entered through the
external pins TEST and SCANEN.
• Chip identification
• Reset status
• Test mode
• Internal memories used (type and size)
• Europe Technologies
®
project code
6048B–ATARM–29-Jun-06